Feng Min, Wen Shaohua, Chen Xiaofang, Deng Die, Yang Xiupei, Zhang Run
College of Chemistry and Chemical Engineering, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University Nanchong 637000 China
Australian Institute for Bioengineering and Nanotechnology, The University of Queensland Brisbane Queensland 4072 Australia
RSC Adv. 2021 Jul 8;11(39):24065-24071. doi: 10.1039/d1ra03456a. eCollection 2021 Jul 6.
Hydroquinone (HQ) is poorly degradable in the ecological environment and is highly toxic to human health even at a low concentration. The colorimetric method has the advantages of low cost and fast analysis, which provides the possibility for simple and rapid detection of HQ. In this work, a new colorimetric method has been developed for HQ detection based on a peroxidase-like catalyst, α-FeO@CoNi. This sweetsop-like α-FeO@CoNi catalyst enables HO to produce hydroxyl (˙OH), leading to the oxidization of colorless 3,3',5,5'-tetramethylbenzidine (TMB) to blue oxTMB. In the presence of HQ, the blue oxTMB is reduced to colorless, which allows for colorimetric detection of HQ in water samples. This method has been validated by detecting HQ in water samples with high selectivity, rapid response, broad detection range (0.50 to 30 μM), and low detection limit (0.16 μM).
对苯二酚（HQ）在生态环境中难以降解，即使在低浓度下对人体健康也具有高毒性。比色法具有成本低和分析速度快的优点，为简单快速检测HQ提供了可能性。在这项工作中，基于类过氧化物酶催化剂α-FeO@CoNi开发了一种用于检测HQ的新比色法。这种番荔枝状的α-FeO@CoNi催化剂能使H₂O₂产生羟基自由基（˙OH），导致无色的3,3',5,5'-四甲基联苯胺（TMB）氧化为蓝色的oxTMB。在HQ存在的情况下，蓝色的oxTMB被还原为无色，从而实现对水样中HQ的比色检测。该方法通过检测水样中的HQ进行了验证，具有高选择性、快速响应、宽检测范围（0.50至30 μM）和低检测限（0.16 μM）。
